see, the downside to having a shop do a trifecta is that the closest one is 3 hours north in superior, wi. at least that's the only one that i know of. and if/when i plan on doing FI, there's no way i can get my car up there after i install everything without paying a thousand bucks for a flatbed up there. hp tuners is expensive as hell compared to trifecta for nearly the exact same gains, so i don't wanna blow 1000 bucks on a tune instead of 250 if i don't have to. i'm sure there's dyno's near me, would i be able to somewhat custom tune my car with FI and then go to a dyno and have them do the rest? the tune is the only thing that's really holding me back and keeping me skeptical about doing any kind of supercharging on my car, so that's why i kind of need these answers :/
You may have your answer already but let me give this for others who may need it as well. HP tuners is only expensive if you buy it, but having the ability to adjust your tune anytime you need to with your laptop is what makes it worth it. However, the only thing I don't really like about Trifecta, even tho they do great work, is the fact that you have to wait for the tunes to be re-written if they need it. And Trifecta last I knew could send you the tuner with the tune loaded on it and you can just hook it up and load the tune on your car yourself. No need to have a shop do it, the only problem with the trifecta way of doing it, is that you never know what they are doing to the tune and if an adjustment needs to be made you have to wait till the working hours for that to be made so you have downtime on your car, where HPtuners you can fix it right there on the spot. Just a simple the pleasure of availability to me. But honestly if you want to go trifecta, I don't discourage you from doing so, just know, for a shop to work on your car, especially if it's custom (believe me I had a custom turbo setup on my cobalt), having the ease of being able to adjust things on the spot after the build is finished, will make it 10 times easier on the shop to make the vehicle safer to roll out. A lot of shops that are good won't roll a custom car out without knowing it's running correctly.
I hate to sound dumb, but what is are the BAR3 maps?
Anyone every have trouble with the stock blow off valve spring being to weak after getting a tune done?
BAR 3 MAP (Manifold Absolute Pressure) sensors are what help your computer see exactly how much air pressure you're running in your engine. Now BAR sensors range from 1-5 on most gasoline cars, but go higher on diesels. The SS/TC cobalts came with BAR 2 Map sensors, which can only read so much boost, and after you reach it's max, the ECU will start guessing on your fuel trims, thus throwing your fuel off. So the BAR 3 upgrade allows you to see up to 27-30 psi, depending on the brand, so your car can accurately adjust the fuel as needed to maintain a properly running engine.
Now as for the BPV (By-Pass Valve (the cobalt ss/tc's came with BPV, not BOV's
)), I had issues with my BPV leaking after 18psi. I know Dejon makes BPV spring upgrades, and it puts a 22lb spring in there (good for 30psi btw), and is only a couple of bucks. It takes 3 bolts to take off from the BPV housing, take the spring out and put the new one in (not as easy as it sounds putting the new one in).
Sorry to bring up an old post, but I figured I'd put in some helpful info for those who may need it later.